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IntlChar::isblank

PHP function Edit on GitHub ✎

(PHP 7, PHP 8)

Check if code point is a "blank" or "horizontal space" character

Description

IntlChar::isblank(int|string $codepoint): bool|null

Determines whether the specified code point is a "blank" or "horizontal space", a character that visibly separates words on a line.

The following are equivalent definitions:

true for Unicode White_Space characters except for "vertical space controls" where "vertical space controls" are the following characters: U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS)
true for U+0009 (TAB) and characters with general category "Zs" (space separators) except Zero Width Space (ZWSP, U+200B).

Returns true if codepoint is either a "blank" or "horizontal space" character, false if not. Returns null on failure.

Example

php

<?php
var_dump(IntlChar::isblank("A"));
var_dump(IntlChar::isblank(" "));
var_dump(IntlChar::isblank("\t"));
?>

The above example will output:

output

bool(false)
bool(true)
bool(true)